Journal of Materials Science

, Volume 26, Issue 15, pp 4123–4129 | Cite as

Dynamic moduli of CaCO3- and Mg(OH)2-filled polypropylene

  • J. Jančář


Fillers suppressed the temperature dependence of storage modulus and caused the flattening of the temperature dependence of the loss modulus in the glass transition region of polypropylene (PP). The glass transition temperature ({ie4123-01}) of PP did not change with filler content (vf). This indicates that none of the fillers affect the mobility of PP in the bulk. A new loss maximum appeared at 50 °C forvf>0.2. This maximum became more prominent when increasing either the filler content or filler specific surface area. Interparticle interactions, leading to the space network of weakly bonded particles, affected PP mobility indirectly. The enhanced interfacial adhesion led to a further decrease of PP mobility near {ie4123-02} and to the increase of the new loss maximum at 50 °C.


Polymer Transition Temperature Specific Surface Glass Transition Polypropylene 
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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • J. Jančář
    • 1
  1. 1.Institute of Materials ScienceStorrsUSA

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